linux qt dbus

#include <QCoreApplication>
#include <QDBusConnection>
#include <QDBusMessage>

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    QDBusMessage message = QDBusMessage::createMethodCall("com.example.Service",
                                                           "/com/example/Object",
                                                           "com.example.Interface",
                                                           "MethodName");

    QDBusConnection connection = QDBusConnection::sessionBus();
    if (!connection.send(message)) {
        qWarning() << "Failed to send D-Bus message:" << connection.lastError().message();
        return 1;
    }

    return app.exec();
}

#include <QCoreApplication>
#include <QDBusConnection>
#include <QDBusInterface>
#include <QDBusReply>

class DBusReceiver : public QObject
{
    Q_OBJECT
public slots:
    void onMethodName(const QString &param) {
        qDebug() << "Received parameter:" << param;
    }
};

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    DBusReceiver receiver;
    QDBusConnection connection = QDBusConnection::sessionBus();
    if (!connection.registerObject("/com/example/Object", &receiver)) {
        qWarning() << "Failed to register object:" << connection.lastError().message();
        return 1;
    }

    QDBusInterface iface("com.example.Service", "/com/example/Object", "com.example.Interface", connection);
    if (!iface.isValid()) {
        qWarning() << "Failed to create D-Bus interface:" << connection.lastError().message();
        return 1;
    }

    QObject::connect(&iface, SIGNAL(MethodName(QString)), &receiver, SLOT(onMethodName(QString)));

    return app.exec();
}

#include "main.moc"